Manufacture of imitation-marble panels



April 3, 1928.

w. J. SCHENK MANUFACTURE OF IMITATION MARBLE PANELS Filed March 9, 1927 B k. k

INVEN TOR) ATTORNEY Patented Apr. 3, 1928.

WILLIAM J. sonnnx, or HOME GARDENS, onmronma.

MANUFACTURE or ImIrArIon-MARBLE PANELS.

Application filed March 9, 1927. Serial No. 174,067.

This invention relates to composition panels for furniture construction. An object of the invention is to provide a marble-like top or panel element for various pieces of furniture, and other uses.

Another object is to provide a simple,

practicable and substantial built-up and arspirit, scope and principle of the invention as'it is more directly hereinafter claimed.

Figure 1 is a transverse section of a table top of the present invention; showing, also,

a compressing tool. 2 Figure 2 is an edge view of the layer building process and layer sprinkling.

Fi ure 3 illustrates a roll of composition and 1ts slicing.

In practicing. my invention a composite member is made as follows:

A box or frame is made of bordering mold 2 having inner, echelon steps or shoulders 3 and 4 and upon the lower step 4 there is firmly glued, or otherwise secured, a stout 8 laminated bed (of wood veneer) 5. The top lip 6 of the frame thus made is dressed true to a common plane.

The recess above the bed 5 isfillecl with a I plastic body of self-setting batch consist-1 mg of Pounds.

Ma esite 30 cat a A bleach 6 '40 Silica (150 mesh fine) -i 40 Talcum owder -1. 4 China 0 ay- J a 16.

These ingredients arethoroughly mixed magnesium chloride of 22 with a solution of to the cons stencyof degrees specific gravity bread dough.

A portion of this batch is spread out on a cloth covered plane to form a layer of say two feet in diameter and one-half inch in thickness (for a given size bed 5). Then a mineral color powder coat is thinly sprinkled over the laid batch and this is repeated by building up a suitable number of superposed layers, A, B, G, in Fig. 2, .each having a color coat as at D, E, B, which vary in color or in tint as may be desired.

This body is then rolled up like a jelly roll, Fig. 3, .and is sliced in transverse, longitudinal or oblique planes,"in slices somewhat thicker than the depth of the recess over the-bed 5.

The slices are laid flat and close as possible on the bed 5 and a heavy roller is rolled to and fro over the inlay M until this is well compacted.

The compressed inlay isthen left to set for an hour or so, and the top is scraped to a smooth plane to bring out the beautiful hair lines of coloring matter which appear 1'- scattered throughout the inlay M from top to bottom in wholly indefinite lines.

The laminated'bed 5 has the advantage over an integral bedpiece (of wood) in that it. will not warp and produce fracturing strains in the marble-like inlay.

The finally set inlay forms a very dense body with a nearly polished, finish exposed top face. i

What is claimed is:

The herein described method of manufacturing a-marble-like panel which consists of making a magnesite cement, building a lint body of this in layers and applying a thin sprinkling of mineral coloring owdor as each layer is formed, rolling the p astic body to give a spiral form to the layers, dividing the roll cross-wise into slices, laying the slices flat upon a framed panel back, coorpacting the slices to approximately the planev of the frame, and finally smoothing off the top of the ,fillin flush with the frame edge and letting bar on in the frame.

WM. J. SCHENK.

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